No vaccine in the history of vaccines works unless most people are vaccinated. The reason we eradicated a lot of deseases in the last one hundred years is because everyone got vaccinated. You really don’t know the way vaccines work? Do you think poleo got eradicated because only a few got vaccinated, or measles, or countless other diseases? Unless most of us get vaccinated we are not beating this thing anytime soon. The longer it takes the more time it has to keep mutating.